<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
  </head>
  <body>
    <button id="btn">点击按钮,发送ajax请求</button>
    <script>
      // btn.onclick = function () {
      //   const xhr = new XMLHttpRequest()
      //   xhr.open('get', 'http://localhost:5000/test')
      //   xhr.send()
      // }
    </script>
    <script src="http://localhost:5000/test">
      // test-get
      // let str = "test-get"
    </script>
    <script>
      console.log(str)
    </script>
  </body>
</html>
